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arXiv 1005.0302cond-mat.quant-gasquant-ph
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囚禁费米气体中反聚束的局域观测

Local observation of antibunching in a trapped Fermi gas

Torben Mueller, Bruno Zimmermann, Jakob Meineke, Jean-Philippe Brantut, Tilman Esslinger, Henning Moritz

摘要:

原位测量和分析了费米气体的局域密度涨落和密度分布。在量子简并制度,弱相互作用的$^6$锂气体的密度波动的抑制相比,非简并的情况下,观察到原子散粒噪声。这种反聚束现象是泡利原理的直接结果,并构成了量子简并的局域探测。我们使用波动耗散定理和局部密度近似的预测来分析我们的数据,展示了基于波动的温度测量。

英文摘要:

Local density fluctuations and density profiles of a Fermi gas are measured in-situ and analyzed. In the quantum degenerate regime, the weakly interacting $^6$Li gas shows a suppression of the density fluctuations compared to the non-degenerate case, where atomic shot noise is observed. This manifestation of antibunching is a direct result of the Pauli principle and constitutes a local probe of quantum degeneracy. We analyze our data using the predictions of the fluctuation-dissipation theorem and the local density approximation, demonstrating a fluctuation-based temperature measurement.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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